[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CENIC (R&E) view

REN Routing Table Report cscora at bgp.nsrc.org
Sat Aug 26 22:05:42 UTC 2023


IPv4 R&E Routing Table Report   22:05 GMT Sat 26 Aug, 2023

  IPv4 BGP Table (R&E) as seen at CENIC.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/CENIC/

Analysis Summary
----------------

BGP routing table entries examined:                               24492
    Prefixes after maximum aggregation (per Origin AS):           13669
    Deaggregation factor:                                          1.79
    Unique aggregates announced (without unneeded subnets):       16190
    Number of IPv4 prefixes with a valid ROA:                     10672
    Number of IPv4 prefixes with an invalid ROA:                     13
    Number of IPv4 prefixes with no ROA:                          13807
Total ASes present in the Internet Routing Table:                  2789
    Prefixes per ASN:                                              8.78
Origin-only ASes present in the Internet Routing Table:            2401
Origin ASes announcing only one prefix:                            1062
Transit ASes present in the Internet Routing Table:                 388
Transit-only ASes present in the Internet Routing Table:             73
Paths with bogon ASNs present in the IPv4 Routing Table:              2
Average AS path length visible in the Internet Routing Table:       3.9
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (395156)                              12
Prefixes from unregistered ASNs in the Routing Table:                 3
    Number of instances of unregistered ASNs:                         3
Number of 32-bit ASNs allocated by the RIRs:                      42510
Number of 32-bit ASNs visible in the Routing Table:                 636
Prefixes from 32-bit ASNs in the Routing Table:                    1948
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              5
Number of addresses announced to Internet:                    296838912
    Equivalent to 17 /8s, 177 /16s and 103 /24s
    Percentage of available address space announced:                8.0
    Percentage of allocated address space announced:                8.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:        3109

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4647
    Total APNIC prefixes after maximum aggregation:                2279
    APNIC Deaggregation factor:                                    2.04
Prefixes being announced from the APNIC address blocks:            4759
    Unique aggregates announced from the APNIC address blocks:     2722
APNIC Region origin ASes present in the Internet Routing Table:     543
    APNIC Prefixes per ASN:                                        8.76
APNIC Region origin ASes announcing only one prefix:                229
APNIC Region transit ASes present in the Internet Routing Table:     60
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    204
Number of APNIC addresses announced to Internet:               47237632
    Equivalent to 2 /8s, 208 /16s and 202 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                     13710
    Total ARIN prefixes after maximum aggregation:                 7776
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            13364
    Unique aggregates announced from the ARIN address blocks:      9266
ARIN Region origin ASes present in the Internet Routing Table:     1273
    ARIN Prefixes per ASN:                                        10.50
ARIN Region origin ASes announcing only one prefix:                 444
ARIN Region transit ASes present in the Internet Routing Table:     167
Average ARIN Region AS path length visible:                         3.5
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     195
Number of ARIN addresses announced to Internet:               174532864
    Equivalent to 10 /8s, 103 /16s and 41 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                      3605
    Total RIPE prefixes after maximum aggregation:                 2867
    RIPE Deaggregation factor:                                     1.26
Prefixes being announced from the RIPE address blocks:             3833
    Unique aggregates announced from the RIPE address blocks:      3183
RIPE Region origin ASes present in the Internet Routing Table:      682
    RIPE Prefixes per ASN:                                         5.62
RIPE Region origin ASes announcing only one prefix:                 301
RIPE Region transit ASes present in the Internet Routing Table:     106
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          13
Number of RIPE region 32-bit ASNs visible in the Routing Table:     142
Number of RIPE addresses announced to Internet:                67449088
    Equivalent to 4 /8s, 5 /16s and 49 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-216475
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    1464
    Total LACNIC prefixes after maximum aggregation:                572
    LACNIC Deaggregation factor:                                   2.56
Prefixes being announced from the LACNIC address blocks:           1466
    Unique aggregates announced from the LACNIC address blocks:     787
LACNIC Region origin ASes present in the Internet Routing Table:    165
    LACNIC Prefixes per ASN:                                       8.88
LACNIC Region origin ASes announcing only one prefix:                63
LACNIC Region transit ASes present in the Internet Routing Table:    26
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    68
Number of LACNIC addresses announced to Internet:               4759808
    Equivalent to 0 /8s, 72 /16s and 161 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   1063
    Total AfriNIC prefixes after maximum aggregation:               172
    AfriNIC Deaggregation factor:                                  6.18
Prefixes being announced from the AfriNIC address blocks:          1065
    Unique aggregates announced from the AfriNIC address blocks:    227
AfriNIC Region origin ASes present in the Internet Routing Table:    51
    AfriNIC Prefixes per ASN:                                     20.88
AfriNIC Region origin ASes announcing only one prefix:               25
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   27
Number of AfriNIC addresses announced to Internet:              2792960
    Equivalent to 0 /8s, 42 /16s and 158 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         589       2146     463  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  1237         191         74     139  KREONET-AS-KR KISTI, KR
 58647         178         18       2  KAGAWAU-AS Kagawa University, JP
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re
  4538         130       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         124         18      17  NKN-CORE-NW NKN Core Network, IN
  4621          69         37       9  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          61          4       1  MAHIDOL-BORDER-AS Mahidol University, T

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4329       4601    1962  AMAZON-02, US
 14618         811       4019     610  AMAZON-AES, US
  8075         372      12790     316  MICROSOFT-CORP-MSN-AS-BLOCK, US
   668         203        652     172  DNIC-AS-00668, US
   376         202        178     150  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         145        507      92  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
    81         127        521      30  NCREN, US
   270         118        329      82  AS270, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         184       1767     181  JANET Jisc Services Limited, GB
  8895         136         24       5  ISU Internet Services Unit ISU, SA
   559         113        533     105  SWITCH Peering requests: peering at switch
  1103          94       1502      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          93         27      73  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  FR-RENATER Reseau National de telecommu

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         221        176      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         153         10      67  Universidad Juarez Autonoma de Tabasco,
 11340         104         24      48  Red Universitaria Nacional, CL
271640          73          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          59        102      39  Fundacao Carlos Chagas Filho de Amparo 
  4270          49         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
  3596          34          4       3  Universidad Autonoma Metropolitana, MX

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         370        319      71  TENET-1, ZA
 36914         257         82       3  KENET-AS, KE
327687         166         28       3  RENU, UG
  8094          48         48      15  PUKNET, ZA
327700          43         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          14          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4329       4601    1962  AMAZON-02, US
 14618         811       4019     610  AMAZON-AES, US
  2907         589       2146     463  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  8075         372      12790     316  MICROSOFT-CORP-MSN-AS-BLOCK, US
  2018         370        319      71  TENET-1, ZA
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
 36914         257         82       3  KENET-AS, KE
  1916         221        176      42  Rede Nacional de Ensino e Pesquisa, BR
   668         203        652     172  DNIC-AS-00668, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  7497         434          411  CSTNET-AS-AP Computer Network Information Cente
  2018         370          299  TENET-1, ZA
 36914         257          254  KENET-AS, KE
 14618         811          201  AMAZON-AES, US
  5786         197          196  UPRENET, PR
  1916         221          179  Rede Nacional de Ensino e Pesquisa, BR
 58647         178          176  KAGAWAU-AS Kagawa University, JP
327687         166          163  RENU, UG
 18558         136          132  NETBLK-RCOEK, US
  8895         136          131  ISU Internet Services Unit ISU, SA

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
64.186.3.0/24        Origin:     16509  AMAZON-02, US
64.186.3.0/24       Transit:      2152  CSUNET-NW, US
134.208.0.0/16       Origin:     17711  NDHU-TW National Dong Hwa University, TW
134.208.0.0/16      Transit:      7539  TWAREN-TW National Center for High-perfo
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US
202.58.231.0/24      Origin:    134096  EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24     Transit:      7575  AARNET-AS-AP Australian Academic and Res

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:0        /9:1       /10:4       /11:9       /12:29      
/13:36      /14:81      /15:202     /16:2145    /17:498     /18:477     
/19:624     /20:1020    /21:1183    /22:1920    /23:1983    /24:14280   
/25:0       /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 16509         687        4329  AMAZON-02, US
 14618         263         811  AMAZON-AES, US
 36914         245         257  KENET-AS, KE
  8895         131         136  ISU Internet Services Unit ISU, SA
  8075          69         372  MICROSOFT-CORP-MSN-AS-BLOCK, US
 23024          52         113  OCDE, US
 32440          37          59  LONI, US
327700          37          43  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:3         2:1         3:122       4:2         5:20        6:4      
   8:2        12:1        13:178      14:89       15:127      16:109    
  18:245      23:47       24:3        31:7        34:2        35:14     
  38:9        40:2        41:120      42:10       44:8        45:67     
  46:11       47:1        49:9        50:11       52:877      54:265    
  58:2        59:19       60:4        61:3        62:18       63:42     
  64:149      65:38       66:90       67:65       68:19       69:52     
  70:24       71:45       72:18       74:75       76:48       77:11     
  78:3        79:10       80:13       81:26       82:6        83:6      
  84:8        85:44       86:10       87:2        88:1        89:13     
  91:57       92:4        93:4        94:8        95:2        96:6      
  97:2        98:13       99:77      101:2       102:37      103:308    
 104:118     107:4       108:81      109:11      111:17      113:4      
 114:23      115:1       116:10      117:61      118:32      119:18     
 121:28      122:11      123:8       124:39      125:3       128:87     
 129:52      130:154     131:75      132:59      133:152     134:107    
 135:3       136:212     137:151     138:16      139:18      140:43     
 141:5       142:60      143:35      144:66      145:5       146:132    
 147:67      148:203     149:17      150:50      151:24      152:142    
 153:14      154:31      155:81      156:71      157:29      158:43     
 159:157     160:35      161:47      162:71      163:94      164:22     
 165:56      166:2       167:25      168:171     169:12      170:163    
 171:1       172:12      173:26      174:2       175:26      176:13     
 177:5       178:2       179:13      180:15      181:1       182:1      
 184:4       185:102     186:3       187:17      188:15      189:3      
 190:19      191:13      192:1546    193:310     194:138     195:87     
 196:203     197:164     198:551     199:351     200:340     201:38     
 202:642     203:442     204:395     205:167     206:219     207:201    
 208:118     209:153     210:189     211:14      212:174     213:17     
 214:8       216:173     217:10      218:22      219:5       220:16     
 222:2       223:14     

End of report


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